SpaceFM vs Nemo

Just right click on any menu or menu option (including the context menu itself) and you'll be allowed to customize it. This lets you add support or integration for features you find missing.

It only needss gtk, udev, desktop-file-util and shared-mime-info which is available in most systems.

Functionalities can be extended by user scripts as plugins. Some scripts can also be downloaded from https://github.com/IgnorantGuru/spacefm-plugins/wiki. Plugins can be exported too.

SpaceFM supports up to 4 individually customizable panels as well as multi-tabbed file management.

Does not obstruct professional work by engrossing root warnings.

Can be used to set wallpaper and desktop icons with high configuration support.

Can open different folders as root, this way you don't have to use the terminal to move around files for which you need root permission.

Available in gtk2 and gtk3.

Great UI, easy to use and configure, several plug-ins available to make everyday tasks even easier.

The most stylish among all FMs.

Nemo can be extended to have additional features through third party plugins.

Option to open folder as root from within the right click menu.

Option to open a folder in terminal, which can help executing commands such as bash.

This functionality was removed in Nautilus and Dolphin at least in Ubuntu-Gnome, but Nemo kept this option, making the obvious functionality of cut, copy and paste much easier.

You can bookmark folders that you open often, this way you can easily access them from anywhere while using Nemo.

Supports ftp, ssh and samba connections.